Great thread Shannon. I'm coming back to say that I think it would be different living right on the Equator. The days would be the same length all year round and the only change would be in precipitation. I probably would wear the same colors year round if I lived in a climate like that.
Living in the desert, the short winter days and freezing cold winter nights make a difference that feels like a season change for us (locals anyway). You can always tell the snowbirds. They run around in shorts and sandals even in the winter because they've never been here through a hot Phoenix summer to acclimate their bodies.